Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1071e97436b62e…

MALICIOUS

PDF

38.5 KB Created: 2020-08-06 13:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6803ef8745ac86a572219385291540f0 SHA-1: 886c3eaadc560c837a220c282c1f49edffc5dae2 SHA-256: 8e1071e97436b62e98f62412b52d7d05c9c6d199bcca96f839b909cb0e9ffb44
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of numerous embedded links, a technique often used for SEO manipulation or to distribute malicious content. One of the embedded URLs, 'https://ttraff.com/pify?keyword=metal+carbonyls+nptel+pdf', is flagged as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=metal+carbonyls+nptel+pdf In PDF document text
    • http://files.zolectra.com/uploads/1/3/1/4/131437147/6217375.pdfIn PDF document text
    • http://files.tzaddi.net/uploads/1/3/0/7/130775970/jewozerigapu-mabekoziku-dukug.pdfIn PDF document text
    • http://wosum.shadowridgewrestling.com/uploads/1/3/2/6/132695569/loxumatonabuki-gurokibudosid-dukeji-didev.pdfIn PDF document text
    • http://files.bestzest.co.uk/uploads/1/3/1/6/131636984/4d14c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/41677823131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7917/8142/files/nighthawk_r7000_dd-_wrt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/dms._vizio._vom_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5211/2803/files/73586608621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8775/5432/files/halo_product_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5811/0363/files/dessert_darwin_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/english_vocabulary_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/80695192770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80278007767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/givobetaseburim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/tagevakoxigiwofefete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/vekebane.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593D 5396 bytes
SHA-256: 53cdf46aa52ed37c3615e600b5bd7e0022340107881d380cd316b0d8fdf5b8f7
font_01_sfnt_off00006bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 9896 bytes
SHA-256: a6be2da7b5a667ea68b31a260d1c7284d54ee597dcc7965cd258677c004c6fe1

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